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AssigneeInnovative Materials Testing Technologies, Inc.
InventorTian-He Ou-Yang
Estimating the term…
Devices and methods for improved inspections of conducting structures of different shapes. An eddy-current probe includes an excitation coil unit, a magnetic detector within the probe, a signal-conditioning/preamplifier circuit within the probe, and a signal channel. The excitation coil unit is shielded on substantially all sides except an emission face that transmits an alternating magnetic signal to a conducting (e.g., metal) object, such that the metal object modifies the alternating magnetic signal. The magnetic detector within the probe is also shielded on substantially all sides except a reception face, such that the alternating magnetic signal as modified by the metal object is received into the shielded magnetic detector and converted into a first electrical signal. The signal-conditioning/preamplifier circuit within the probe is shielded on substantially all sides and provided with electrical power. The shielded preamplifier provides detection for very small signals, such as from magnetic probing of aircraft skin metals. Other embodiments include a traveling-wave excitation structure and a multiple-phase driving circuit, some of which include the shielded pre-amplifier, and others of which are not shielded. An eddy scope is described that provides a multiple-phase excitation signal to various different probes.
A method of transducing magnetic signals indicative of a flaw in a conducting object, comprising:
An eddy-current probe system for detecting a flaw in a conducting object, the probe comprising:
An eddy-current probe system for detecting a flaw in a conducting object, the probe comprising:
Dependencies are inferred from the claim text.